U4
Stainless steel UF water filter U4
U4 is the stainless steel UF option for buyers who want a non-electric product line that is different from RO systems.
Specifications
Stainless steel UF water filter for non-RO catalog options
| Model | U4 |
|---|---|
| Product type | Under-sink stainless steel UF water filter |
| Reference flow | 100 GPD / 90 L/H reference yield |
| Filter structure | PP + CTO + PP + UF + T33 |
| Filtration precision | 0.01um UF membrane |
| Power | Manual / non-electric |

Buying notes
Confirm these points before final quotation
UF does not reduce TDS in the same way as RO.
The stainless steel body helps U4 stand apart in a distributor catalog.
Logo and packaging requirements should be checked against quantity and model details.
Catalog comparison
Keep the model line easy for buyers to understand
| A1-600 / A1-1200 | A1 Tankless RO Series | Compare |
|---|---|---|
| A2-600 / A2-800 | A2 Smart Faucet RO Series | Compare |
| A3-400 | A3 Non-electric RO | Compare |
| U4 | U4 Stainless Steel UF | Current model direction |
Related pages
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Purey can respond faster when the first inquiry includes product direction and order context.FAQ
Common B2B buyer questions
Is U4 an RO system?
No. U4 is a stainless steel UF water filter and should be compared as a non-RO option.
Does U4 need electricity?
U4 is positioned as a manual, non-electric UF product direction.
Can Purey support logo or packaging customization?
Logo and packaging discussions are available for suitable models and order quantities. Send your target model, quantity, logo file, and packaging request for review.